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为探讨精神分裂症凶杀行为的犯罪学特征，用犯罪学调查表分别对精神分裂症发生凶杀行为者（５０例）与正常人发生凶杀行为者（５０例）的犯罪学特征进行了调查。结果显示，精神分裂症组与对照组比较，在犯罪动机、犯罪实施、犯罪方式、被害对象及作案后即刻表现的差异均有显著性。精神分裂症患者犯罪动机以报复杀人多见（４０／５０）。正常人以奸情杀人（２３／５０）、激情杀人（１２／５０）多见。精神分裂症患者常公开地实施凶杀行为（４５／５０），多数无预谋（３７／５０），白天作案为主（３８／５０），并在作案前常有先兆（１２／５０）。精神分裂症凶杀行为的被害对象以同事、邻居及子女为主（３５／５０），作案后大多数被现场抓获（２４／５０），很少发生潜逃（６／５０），对作案现场不作伪装（４８／５０）。提示这些差别是考察精神分裂症患者发生凶杀行为时辨认和控制能力的重要依据。
In order to explore the criminological characteristics of homicide in schizophrenia, the criminological investigation of schizophrenia (50 cases) and homicidal cases (50 cases) were carried out. The results showed that compared with the control group, schizophrenia group showed significant differences in motivation, crime implementation, crime mode, victim target and immediate performance. Motivation in patients with schizophrenia to revenge kill more common (40/50). Normal to murder (23/50), passion kill (12/50) more common. Schizophrenia patients often openly commit homicide (45/50), mostly without premedication (37/50), mainly during the day (38/50) and have a harbinger of precedent (12/50) before committing the crime. Most of the victims of schizophrenia homicide were colleagues, neighbors and children (35/50). Most of the victims were arrested on the scene (24/50) and absconded (6/50) (48/50). It is suggested that these differences should be considered as an important basis for the identification and control of schizophrenics in the event of homicide.